Lathe bed



Oct. 7, 1930. F. B. cocKBuRN ET'AL 1,777,603

LATHE BED Filed Aug. l5. 1928 2 Sheets-Sheet l avt-vento@ NIE 35% Wy Ww(Oct. 7, 1930. B. COCKBURN ET AL LATHE BED Filed Aug. 13. 192s 2sheets-smet 2 -I I I l "I "I Kl llll,

Patented Oct. 7, 17930A "UNITED STATES 'FRANCIS is. QQCKBURNUAND' HERMANJ.=BRE1TENBAQ11, orfcINcINNATI, onro, As-

t ysIGfNons To 'rnninonen a omdnconroanrronor omo i nppncafioiimeaaugust 13, was.` serial Nassim.

` The invention `particularlyl relates to *the construction of a bedwhich lwillmore` lirrnly resist and withstand'torsional "strains andstresses as wellasve'rtical or bending strainsV to which the structure`is subjected* "l5 lIt consistsin conn'eotingthe side or `rail wallsintermediate` of their 1 length with? a plurality of hollow struts; eachstrut open at its base and having vertical wallsfiiaring or curvedoutwardly at their ends, joining with theside` or rail walls to providea .strutof `'greater-*width `at its'juncture with the side walls than inthe center. The several struts form oblongppening's" in the center Aoithe bedandeachhas a rounded top wall to drain *'25 and shed thelubricant or chips downwardly for ,collection into a panusu'allyf'disposed beneath thebed. 'Further features and advantages'ofthefinvention willbe Vmorefully set forth` in the ""-530 "description ofthe accompanying drawings forming `apart of this specification, inwhich: Figure l is a centralfvertical section through the improved` bed,containing the hollow strutsfopenV at the baseandrwith a 'curved orrounded topwallf"` Y v Figure Qisga section on line 2f'-2,"Figure 1."Figure 3 isan` end elevation of the bed, viewed from the head stockend. Y,

' f Figure isa section on line5`44LFigure 1.

"40 Figure 5 is an end elevation of the bed from the" tail stock end. i

`Referringr tothe drawings, l-'lindicates 'the sidewalls or rails of thebed of usual y cross section configuration, each'to'provide a -track orway-2 `forrvslidably orf-otherwise than "in 'the center thereof.

with the upper or top wall 7 lthereof'curved or rounded to drain orshedany lubricant 'tical walls 10--10 joining the :sidemwallsf'of curvedformi horizontallyor are iared `at SHIPLEY TMACHINEV-TQOL COMPANY; orcINcINNATI, y I.

supporting a saddle or other part of the ma; chine tool,v usuallybridging across the side walls to engage both thereof. i i i f i Thesidewalls at their oppositeends "are` integrally connected i by fcrosswalls or webs and, asfillustratedratthe left-hand or headstockrendyby a single crossfwallor'web; V3,

and atl the tail stockendfxby. ahollow fstrut 4 having an inclinedupperwall `5 curved horizontally to 'provide ai greater width at r5.5 V

theljunotionof` the `strut with the side walls A pluralityofholl'owstruts (ifo at def# initey spacing` apart `join the sideVV wallsintermediate of vtheir `longitudinal"` ends, the ai() struts beingapproximately .of duplicate formation,` with the nunibere'inploye'd'fdepending upon the length of'theibed, and eachlisapproximately of rectangular cross section,

or chipsfalling thereon downwardly through the opening formed `by thespacing of the struts and usually dropping into a pan,` or

like holder, disposed beneaththe bed; d The hollow strut is open atl itsbase prefer- `'ably having apair of openings 8 8 at relatively'oppos'ite sidesof acentral septum "-9 as'a vertical partition,`integralfwithlthe ver` the bed. The fopen-ingsin the base wallsprovideVAfor removal of the cores used in casting the structure.v

' The vertical wallsQ-lfof the strut are of S0 their endstopresentthesalne at aniacute angleto the side walls with which it joins,

and also to provide a greater `width of `strut at its` juncture with1the side `wall thanii'n the center thereof.

The structure in cross section horizontally is approximately of H formasshown iin Figure`2, so thatthe wallsq'ualify 'as angularbraces, addinggreater -rigiditytothe bed, and capable of withstanding 'greater 90 Y ofchips or cuttings from the tool. The

`said sidewalls.

struts do not add any appreciableweight to the lathe bed but materiallystrengthen the structure'for heavy duty service.

Having described our invention, we claim: l. A machine tool bedcomprising longitudinal 'sidewalls of substantial depth having uppersurfaces forming tracks, and a transverse strut joining saidv sidewalls,said" strut comprising spaced lateral webs. terminating upwardly adistance below said tracks, and downwardly at substantiallythe loweredges of said side walls, at least oneof said Y webs having each endthereof divergent from that axial line of the strutY which isvtransverseto the side walls, said strut 'also comprising a top wally vconnectingsaid. lateral webs@ and theside walls.V s i. `2.y A machine tool-bedcomprising longitudinal side walls of substantial depth havingl`upper/.surfaces forming tracks, and a transversestrut joining-'saidsidewalls, said struti comprising spaced lateral websterminatingupwardly a distance belowsaid tracks andadownwardly at' substantiallythe lower edges of said sidewalls, at least one of said webs. havingeach end thereof divergent from that axial line ofthe struti which istrans'- 'verse'to-the side walls, said'stru'tfalso. Ycom- `prisingza'top wall connecting saidlateral websk and the side walls and downwardlycurved 'in a longitudinal ldirection. of the latter.

3. A machine tool bed comprising longitudinal side walls of substantialdepth havingupper surfaces forming tracks, and a transverse strutjoining said side walls, said vstrutl comprising spaced lateral websterminating upwardly a distance belowsaid Vtracks 'andV downwardlyatsubstantiallvthe lower edges of said side walls, eachof 'said Vwebshaving each `end thereof divergent from that vaxial line of the strutwhichA i'stransverse 'Ito the sidewalls, said strut also comprising atop wall connectingsaid lateral webs and 4. A machine tool bedcomprising longitudinal side vwalls of substantial? depth having upperVsurfaces forming tracks, and a transverse strut joining said side walls,'said strut vcomprising spaced lateral webs terminating upwardly a.distance below vsaid tracks'anddownwardly at substantially the loweredges of said side walls, each of said -webs having each end thereofdivergent from that axial line of thestrut which is transverse to theside walls, said strut alsoV comprising a top wall connecting'saidlat-eral webs-and said side walls, said top wall having a top surfacearched longitudinally of the side walls.

5. A machine tool bed comprising longitudinal side walls of substantialdepth having upper surfaces forming tracks, and a plurality of integrallongitudinally spaced transverse struts joining said side walls, each ofsaid struts comprising spaced lateral webs terminating upwardly adistance below said tracks and downwardly at substantially the loweredges of said side walls, the lateral webs of each strutbeingcurvilinearly divergentat their endsfrom that axial line of the strutwhich is 'transverse 'tofthe side walls, earch of saidstru-tsfal'socomprising a top wall vintegrally*connecting its lateralwebs and the side walls and arched longitudinally of the latter.

6. A machine tool bed comprising longitudinal side wallsV of substantialdepth having upper surfaces forming tracks4 and' an integralv transversestrutjoining said side walls; said strut comprising spaced lateral webslterminating upwardly a distance below said tracks, and'L downwardly atsubstantially the lower.` edges of vsaid-side walls, each of saidwebshavingy each e'nd thereof curvilinearly diver'gent from that axialline ofthe strut which is transverse to the side lw'all`sa vertical webvintegrally-'connecting the intermediate portions of'said lateral webs,and a top wall-integrally connecting said lateral webs and sidewalls andarched longitudinally of the latter.'

i' 7. A machine toolbed comprising longis tudinal 4side walls ofsubstantial depth having upper `surfaces forming tracks, and an integraltransverse Vstrut joining said side walls; said strut comprising spacedlateral webs terminating upwardly a distance below saidtracksanddownwardly at substantially `the loweryedges ofsaid side walls, each ofsaid webs having each end thereof curvilinearly divergent from thataXial line of the strut which is transverse lto the" side walls, 'averticalfweb integrally connecting the intermediate portions of said'lateralwebs, a bottom wall integrally vconnecting said'lateral webs.`and lprovided with' a perforation at eachsidef of said vertical web,and" a top wall integrally connecting said lateral webs tranverse strutsconnecting said side walls; each of said struts comprising spacedlateral webs termin-ating upwardly a distance. below said tracks anddownwardly at substantially the lower edges of said-side' walls, thelateral webs of each strut being curvilinearly divergent at their endsfrom` that axial; line of thefstrutwhich is transverse each of the sideWalls,

to the side walls, each of said struts also comprising al top Wall and abottom Wall integrally connecting its lateral Webs and the side Walls,said topV Wall being arched longitudinally of the side Walls and saidbottom Wall being provided with an aperture adjacent and a vertical Websubstantially midway between the side Walls and L and bottom'wallsofeach strut. v

In Witness nvwhereof, We hereunto subscribe integrally joining thelateral Webs 0111' llames.

'FRANCIS 1B. oooKBURN. Y HERMAN J. BREITENBAGH.

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